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No. 65,224. Patented-Nov. 29, ":93.

c. K. PICKLES. STEP-OVER CAR SEAT.

(Application filed Dec. 13, 18910 (No Model.)

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UNITED STATES PATENT OFFICE.

CHARLES K. PIOKLES, OF ST. LOUIS, MISSOURI, ASSIGNOR TO SAMUEL M.

DODD, OF SAME PLACE.

STEP-OVER CAR-SEAT.

SPECIFICATION forming part of Letters Patent No. 615,224, dated November 29, 1898. Application filed December 13,1897. Serial No. 661,721. (No model.)

To all whom it may concern.-

Be it known that I, CHARLES K. PIoKLEs,a citizen of the United States, residing at St. Louis, in the State'of Missouri, have invented certain new and useful Improvements in Step- Over Car-Seats; and I do hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming a part of this specification.

This invention relates more particularly to that class of car-seats in which in a reversal of the seatthe seat-back will haveastep over movement above the seat portion, an example of which type of seat is shown in my former application for Letters Patent, Serial No. 655,815, filed October 20, 1897.

The objects of thepresent improvements are to provide a durable and efficient connecting mechanism for the different parts of the chair or seat, with which the movements of such parts with relation to each other are eifected in a positive and ready manner and with which the shifting movement that is imparted to the seat portion is of 'an amplified nature that will expose. for effective use the full width of the seat from front to back, as will hereinafter more fully appear. I attain such objects by the construction illustrated in the accompanying drawings, in which Figurel .is an end elevation of a car-seat embodying the present invention; Fig. 2, a frontelevation of the same with portions in section at lineww, Fig. 1; Fig. 3, a detail end elevation illustrating the connection between the upper ends of'the supporting-arms of the seat-back.

Similar numerals of reference indicate like parts in the several views.

Referring to the drawings, 1 represents the seat proper, to'the respective ends of which are attached the end plates 2 of the present improvement. Each of said plates is provided with two or more supporting lugs or projections 3, a toothed rack 4, preferably of a curved or segmental nature, as shown, and a confining slot or recess 5, preferably of a curved nature and concentric with thetoothed rack 4:.

The chair-base will usually consist of a pair of end supporting-standards, and in the present construction will be formed with end plates 6, each of which is formed with a pair of vertically-elongated guide slots or recesses 7 and a horizontal guide slot or recess 8, that is preferably of a curved or segmental nature, as shown.

' The horizontal guide slot or recess 8 receives the supporting-lugsB of the seat-plate 2 to support and limit the seat in, its shifting movement.

9 is the step-over seat-back, preferably of the straight form shown and finished or upholstered on both sides or surfaces.

'10 are the supporting-arms of the seat-back 9, and, as in my former application above referred to, such arms may be of a substantially counterpart formation, with their upper ends having pivotal connection with the arms of a cross-head 11, attached to each end of the seat-back 9, as shown, while their lower ends are provided with guide lugs or projections 12 and with sector-shaped ends 13, concentric with the guide studs or projections 12 and preferably .of a toothed nature, as shown, and adapted to engage with the correspondingly- 'for1ned track or toothed rack 4 on the end plate 2 of the seat to impart in the construction shown a combined sliding and tilting motion to the seat 1 and in a direction opposite to that in which the seat-back 9 has movement. The amount of such tilting movement of the seat will depend upon the amount of curvature imparted to the horizontal guide slot orrecess 8 in the seat-standard, so that by modifying the form of such slot a corresponding change will be made in the movement of the seat 1.

In the present improvements the guidestuds 12 project from opposite sides of the arms 10 and have a dual or twofold engagement, first, with the confining slots or recesses 5 of the seat-plate 2 to hold the toothed sector 13 in engagement with rack 4; during the reversal of the seat-back, and, second, with.

mounted in suitable bearings beneath the seat and extending from end to end of the same. 15 are pinions on the respective ends of said shaft that have engagement with toothed racks 16 on the respective end plates 6 of the seat-standard and which racks will be arranged concentric with the guide-slots S in said plates (3.

To insure a like equal and positive movement of the upper ends of the back-supporting arms 10, the construction illustrated in Fig. 3 will be employed. 18 are sector formations 011 the respective upper ends of the backsupporting arms 10 and which mesh with the teeth of a centrally-arranged pinion 1t), arranged upon a shaft 20, that extends longitudinally through the seat-back, and at its other end is provided with a similar pinion to engage counterpart sector formations on the opposite set of seat-supporting arms.

Having thus fully described my said invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a car-seat, the combination of a seatstandard provided with one or more verticallyarranged confining slots or recesses, means upon the standard for supporting the seat portion in its shifting movements, a shifting seat portion provided with a toothed rack, and a confining slot or recess, a seat-back, means for supporting said back comprising one or more arms having confining-studs engaging the confining-slots in the standard and in the seat portion and provided with toothed scetor-shaped ends that engage the toothed rack of said seat portion, substantially as set forth.

2. In a car-seat, the combination of a seatstandard provided with one or more verticallyarranged confining slots or recesses, means upon the standard for supporting the seat portion in its shifting movement, a shifting seat portion provided with a segmental toothed rack and a segmental confining slot or recess concentric therewith, a seat-back, means for supporting said back comprising one or more arms having confining-studs engaging the confining-slots in the standard and in the seat portion, and provided with toothed sector-shaped ends that engage the toothed racks of said seat portion, substantially as set forth.

3. In a car-seat, the combination of a seatstandard provided with one or more verticallyarranged confining slots or recesses and a horizontal supporting slot or recess, a shifting seat portion provided with a toothed track, a confining slot or recess, and lugs to engage in the supporting-slot of the standard to guide and support the seat portion in its movement, a seat-back, means for supporting said back comprising one or more arms having confining-studs engaging in the confining-slots in the standard and in the seat portion and provided with toothed sector-shaped ends that engage the toothed rack of said seat portion, 'lubstantially as set forth.

- In a ear-seat, the combination of a seatstandard provided with one or more verticallyarranged confining slots or recesses and a segmental supporting slot or recess, a shifting seat portion provided with a segmental toothed rack, a segmental confining slot or recess and lugs to engage in the supportingslot of the standard to guide and support the seat portion in its movement, a seat-back, means for supporting said back comprising one or more arms having confining-studs engaging in the confining-slots in the standard and in the seat portion and provided with toothed sector-shaped ends that engage the toothed rack of said seat portion, substantially as set forth.

5. In a step-over car-seat, the combination of a seat-standard provided with a pair of vertically-arranged confining slots or recesses, means upon the standard for supporting the seat portion in its shifting movement, a shifting seat portion provided with a toothed rack and a confining slot or recess, a step-over back, and means for supporting said back comprising a pair of arms having confiningstuds engaging the confining-slots in the standard and in the seat portion and provided with toothed sector-shaped ends that engage the toothed rack of said seat portion, substantially as set forth.

6. In a step-over car-seat, the combination of a seat-standard provided with a pair of vertieally-arranged confining slots or recesses, means upon the standard for supporting the seat portion in its shifting movement, a shifting seat portion provided with a segmental toothed rack and a segmental confining slot or recess concentric therewith, a step-over seat-back, and means for supporting said back comprising a pair of arms having confining-studs engaging the confining-slots in the standard and in the seat portion and provided with toothed sector-shaped ends that engage the toothed rack of said seat portion, substantially as set forth.

7. In a step-over car-seat, the combination of a seat-standard provided with a pair of verticallyarranged confining slots or recesses and a horizontal supporting slot or recess, a shifting seat portion provided with a toothed rack, a confining slot or recess and lugs to engage in the supporting-slot of the standard to guide and support the seat portion in its movement, a step-over back, and means for supporting said back, comprising a pair of arms having confining-studs engaging the confining-slots in the standard and in the seat portion and provided with toothed sectorshaped ends that engage the toothed rack of said seat portion, substantially as set forth.

8. In a step-over car-seat, the combination of a seat-standard provided with a pair of vertically-arranged confining slots or recesses and a segmental supporting slot or recess, a shifting seat portion provided with a segmental toothed rack, a segmental confining slot or recess and lugs to engage in the supporting-slot of the standard to guide and support the seat portion in its movement, a step-over back, and means for supporting said back comprising a pair of arms having confining studs engaging the confining slots in the standard and in the seat portion and provided with toothed sector-shaped ends that engage the toothed rack of said seat portion, substantially as set forth.

9. In a step-over car-seat, the combination of a seat-standard, provided with a horizontal supporting-slot and means for confining the back-supporting arms against horizontal movement, a shifting seat portion provided with a toothed track and projecting lugs to engage in the supporting-slot of the standard, to guide and support the seat portion in its movement, a seat-back, means for supporting said back comprising one or more arms having toothed sector-shaped ends that engage the rack on the seat portion, and means for confining the same to their engagement, substantially as set forth.

10. In a step-over car-seat, the combination of a seat-standard provided with a horizontal supporting-slot of a curved formation, means for confining the back-supportin g arms against horizontal movement, a shifting seat portion provided-with a segmental toothed rack, and projecting lugs to engage in the supporting-slot of the standard to guide and support the seat portion inits shifting movement, a seat-back, means for supporting the back comprising one or more arms having toothed sector-shaped ends that engage the rack on the seat portion, and means for confining the same in their engagement, substantially as set forth.

11. In a step-over car-seat, the combination of the pairs of seat-back arms, theupper ends of which are provided with toothed sectorshaped parts, a seat-back, a shaft journaled in said seat-back and extending lengthwise the same, and gear-wheels on the ends of said shaft engaging the sector-shaped ends of the series of back-supportin g arms, substantially as set forth.

In testimony whereof Witness my hand this 11th day of December, 1897.

CHARLES K. PICKLES. In presence of- ROBERT BURNS, G. A. PENNINGTON. 

